1663-4

View detailed technical data, stock status, and sourcing information for: 1663-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-564-0398

Item Name Code

06158

Assigment Date

01/01/1963 (63 years ago)

0.505 inches nominal hole diameter, 0.750 inches nominal outside diameter, 0.015 inches nominal external keyway length, 0.188 inches nominal external keyway width, 4 external keyway quantity

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.505 inches nominal
Outside Diameter: 0.750 inches nominal
External Keyway Length: 0.015 inches nominal
External Keyway Width: 0.188 inches nominal
External Keyway Quantity: 4
Material Thickness: 0.039 inches nominal
Hardness Rating: 68.0 rockwell a minimum or 70.0 rockwell a maximum
Material: steel comp 1040 or steel comp 1548 or steel comp 1045 or steel comp 1050 overall
Material Document And Classification: aisi assn std all material responses overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
1650-00-697-8613	No Name Available	01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
1663-4	Keyway Washer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-564-0398?

The FSCG of the NSN 5310-00-564-0398 is 5310

Does the NSN 5310-00-564-0398 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-564-0398 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-00-564-0398 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-564-0398 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-00-564-0398 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963